GitHub user sureshthalamati opened a pull request:
https://github.com/apache/spark/pull/12019
SPARK-14218][SQL] Use encoder schema for generating dataset show output to
match the column names with the data.
## What changes were proposed in this pull request?
Data is displayed in the schema order of the encoder, but the column names
are displayed in the order of the underlying data frame schema, this results in
mismatch of column names and the data in the output. This PR modifies the
schema used in the showString() method to the encoder schema.
## How was this patch tested?
Added a new unit test case to check the output of showString when the
schema orders are different.
@liancheng
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sureshthalamati/spark
dataset_show_column_name_fix-SPARK-14218
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12019.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #12019
----
commit a5ec52140fccee00e3738b886b16fa078853e9cb
Author: sureshthalamati <[email protected]>
Date: 2016-03-28T23:52:17Z
Modified the schema used by the dataset show method to display the column
names to the encoder schema to match with the data output order.
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